Engineered for reliability, The Taco Heat Motor Power Head provides a time proven method for operation of hydronic zone valves. The exclusive heat motor design operates silently, while the twist off head allows for serviceability without disturbing system connections. This power head is 24 VAC powered with an isolated end switch.

• Isolated end switch
• 24 VAC powered
• For Taco series 570 zone valves (570, 571, 572, and 573)
• Allows for service of valve without removing it

The VR-801 Vacuum Relief Valve is designed to protect hot water supply systems and pressure vessels against negative pressure. Installed on the cold water supply line, the Cash Acme VR-801 closes tightly under pressure and opens at a 1 in. mercury vacuum. Atmosphere admitted to the system breaks the vacuum, preventing collapse of the storage tank.

• Brass body
• Silicone seat disc
• Prevents internal vacuum conditions
• Guards against siphonage
• Opens quickly in emergency situations
• Every valve is tested for performance prior to shipping

This non-potable water expansion tank is designed for use in commercial and residential closed loop hydronic heating system piping to control the thermal expansion of hot water and maintain system pressure below the relief setting of the relief valve. This carbon steel tank is pre-charged at 12 PSI, tank volume is 4.5 gal. and features a durable expansion membrane that prevents contact of the water with the air in the tank. This rugged butyl diaphragm minimizes loss of the air change and ensures long and trouble-free life for the system. This tank is made of carbon steel with epoxy , mounts to supply piping, 1/2 in. MNPT system connection and a 0.302-32 in. charging valve connection (standard tire valve) to facilitate on-site charging of the tank to meet system requirements. The maximum working pressure is 75 PSI (5.3 BAR).

• 4.5 gal. tank
• Rugged flexible butyl diaphragm
• Inline and free standing models
• Steel construction
• Precharged to 12 PSI
• Max. Pressure 75 PSI
• Durable expansion membrane prevents contact of water with the air in the tank
• Carbon steal with epoxy
• Commercial and residential applications
• 1/2 in. MNPT system connection

This 1/2 inch bronze combination fill valve and backflow preventer is for use in commercial and residential hydronic heating systems to provide make-up water to the boiler, and prevent backflow when supply pressure falls below system pressure. It consists of a bronze backflow preventer, model 9D and a bronze feed water pressure regulator, model 1156F, in one pre-assembled unit. The high capacity fill valve provides quick system filling and purging. It is designed for use in the boiler feed lines of hydronic heating systems and has 1/2 inch union NPT inlet x NPT threaded outlet connections. The maximum pressure is 100 psi (6.9 bar).

• Bronze body for durability
• Threaded connections
• Strainer screen
• Horizontal or vertical installation
• Maximum pressure is 100 psi
• One pre-assembled unit of fill valve and backflow preventer

Nibco ACR Copper Coupling

• 0.5" Tubing
• Dezincification Resistant
• NFPA 99 Healthcare Facilities Gas And Vacuum Systems And The Compressed Gas Association, Pamphlet G4.1 (Medical Gas)
• With Stop
• Mfg #039923306944
• 0.5" Tubing
• Dezincification Resistant
• NFPA 99 Healthcare Facilities Gas And Vacuum Systems And The Compressed Gas Association, Pamphlet G4.1 (Medical Gas)
• With Stop

• Incorporates a cast iron housing, three speed motor (Low/Med/High) and a built-in, removable check valve
• Pump's performance parameters cover nearly all traditional heating applications- from radiant and baseboards, to fan coils and zoning and many others
• 3 speeds allow to set up the circulator pump in a way that matches the system's requirements
• Wet rotor design allows it to be virtually silent while operating

All the features you trust from the original Isolator Uni-Flange ball valve, plus a 360 degree rotating flange that allows for orientation to any degree necessary for your installation. This forged brass full port ball valve features a blow-out proof stem, adjustable packing glands and a stainless steel snap ring for extra stability during installation. The only way to isolate circulator pumps.

• Conical inlet to minimize turbulence
• Replaces 3-components, eliminates 2-leak paths, saves approximately 20 minutes in labor
• Fits virtually any standard circulator pump
• Available with slotted holes for high velocity pumps
• Prevents electrolysis
• Eliminates galvanic corrosion

The 007-IFC features a unique replaceable cartridge that is field serviceable. It's removable Integral Flow Check is designed to improve pump performance, simplify piping and reduce installation costs. The spring-loaded IFC replaces a separate in-line-flow check to ensure protection against reverse flow and gravity flow in your heating system.

• Replaceable cartridge
• Removeable integral flow check
• Quiet efficient operation
• Self-lubrication

All HAYDON baseboard heating systems are manufactured to provide many years of trouble-free, safe, silent and economical heat distribution. Hot water baseboard systems generate naturally converted heat that rises gently, warming walls and blocking drafts, providing uniform heat throughout a home's entire perimeter. HAYDON's system operates smoothly and silently. With hot air, you constantly hear and feel fan on, heat on, draft, fan off, heat off. Slim and unobtrusive, the low profile Model 750s BTU output is ideal for efficient, economical residential installations. This HAYDON Wall Trim is used to connect two HAYDON Baseboard Heaters together for a seamless finish.

• Enclosure top-back panel: fabricated from 1-piece of sturdy pre-painted cold rolled steel designed for efficient air flow, with uniform surfaces and no dust-collecting cutouts
• Fingertip positional damper: special hinging mechanism allows for finger-tip control, closes shut to keep out dust or opens wide for maximum heat output, damper deflects air into room, for better heating distribution
• High strength brackets: die-formed from 1 piece of heavy gauge steel designed to strengthen the enclosure and protect the heating element against damage special notches hold the heating element to allow for quiet expansion won't break or bend, cannot pop out of place, a turn of the wrist removes the twist slide brackets, for easy location during installation
• Noiseless element: aluminum fins are mechanically fastened to copper tubing to insure maximum heat transfer, elements have an expanded end for easy sweat connections without coupling
• Silent glide expansion tracks: 2-unique polyethylene silent glide tracks eliminate expansion and contraction noises
• Wall trim: used as a connector between 2 baseboard overs

2-way on-off low voltage valves consist of an actuator and valve assembly for controlling the flow of hot water. Manual opener (on all models, except straight-through, normally open valves) for valve operation on power failure; valve returns to automatic position when power is restored. All models may be installed without disassembling the valve.

• Compact construction for easy installation
• Complete powerhead may be removed or replaced without breaking plumbing line connections or draining the system
• Actuator motor may be replaced without removing the valve body or draining the system
• Use this valve in closed loop hydronic systems that do not contain dissolved oxygen in system water, such as fresh water from frequent source of makeup water

Danfoss Aveo Sensors, Electronic, Sensor type. Easy To Use. Thermostatic Radiator Valve. Built in Tamper Proof. 015G4290. Mfg #015G4290

• Easy To Use
• Thermostatic Radiator Valve
• Built in Tamper Proof
• 015G4290

2-way on-off low voltage valves consist of an actuator and valve assembly for controlling the flow of hot water. Manual opener (on all models, except straight-through, normally open valves) for valve operation on power failure; valve returns to automatic position when power is restored. All models may be installed without disassembling the valve.

• Compact construction for easy installation
• Complete powerhead may be removed or replaced without breaking plumbing line connections or draining the system
• Actuator motor may be replaced without removing the valve body or draining the system
• Patent no. 5,988,201
• Light weight
• Proven durability
• Easy to install
• No clog vent
• 360 degree adjustable collar ring for installation flexibility
• Stainless steel concentrator which eliminates gurgling noise

All HAYDON baseboard heating systems are manufactured to provide many years of trouble-free, safe, silent, and economical heat distribution. Hot water baseboard systems generate naturally converted heat that rises gently, warming walls and blocking drafts, providing uniform heat throughout a home's entire perimeter. HAYDON's system operates smoothly and silently. With hot air, you constantly hear and feel fan on, heat on, draft, fan off, heat off. Slim and unobtrusive, the low profile Model 750s BTU output is ideal for efficient, economical residential installations.

• Enclosure top-back panel: fabricated from 1-piece of sturdy pre-painted cold rolled steel designed for efficient air flow, with uniform surfaces and no dust-collecting cutouts
• Fingertip positional damper: special hinging mechanism allows for finger-tip control, closes shut to keep out dust or opens wide for maximum heat output, damper deflects air into room, for better heating distribution
• High strength brackets: die-formed from 1 piece of heavy-gauge steel designed to strengthen the enclosure and protect the heating element against damage special notches hold the heating element to allow for quiet expansion won't break or bend, cannot pop out of place, a turn of the wrist removes the twist slide brackets, for easy location during installation
• Noiseless element: aluminum fins are mechanically fastened to copper tubing to insure maximum heat transfer, elements have an expanded end for easy sweat connections without coupling
• Silent glide expansion tracks: 2-unique polyethylene silent glide tracks eliminate expansion and contraction noises

This 1/8 in. automatic air vent valve is used in commercial and residential hydronic heating applications to provide automatic air venting for hot or cold water distribution systems. It consists of a brass body construction with male NPT connection, brass cover, air vent with silicone rubber seal, polyethylene float with valve plug, and automatic vent. It has a high temperature rating and is ideal for use with glycol systems or for use as an anti-vacuum device. It can also be installed to permit the separation and dispersal of air while fluid is circulating in the system. It can be disassembled for inspection and cleaning. The maximum pressure is 150 psi (10 BAR).

• Body and cover are brass construction
• Air vent with silicon rubber seal
• Float is high temperature resistant polyethylene
• Suitable for use with glycol systems
• Can be disassembled for inspection and cleaning
• Provides automatic air venting for hot or cold water distribution systems
• Purge air that may be in the water system
• Minimum working pressure is 1.45 psi
• Maximum working pressure is 150 psi
• Temperature range is 33 to 240 degree F

The Taco 1 in. cast iron Freedom Flange set includes: (2) flanges, (4) nuts, and (4) mounting bolts. These flanges are designed for use with Taco "00", "00e", "2400", and "100" series hydronic circulators. Easily installed and removed with a common wrench.

• For use in a heating system
• Compatible with a wide variety of Taco circulators
• 1 in. Dia connection size
• Unique hex design provides easy-on, easy-off installation with a standard adjustable wrench

The 005-050RP Cartridge Assembly is used on several models of Taco circulators. This kit takes the place of conventional seal kits and is extremely easy to install. The Cartridge comes with all the hardware needed to extend your Taco Circulator's operating life.

• Repair part
• Includes casing body bolts
• Easy to install
• 3-year warranty

Pressure regulating valve for automatic control of boiler feed water and other pressure reducing applications. Especially constructed for expansion tank mounting. Included in many expansion kits.

• Fast fill feature
• Built in check valve
• Easy dial-set technology allows simple output pressure setting in psi
• Integrated NPT pressure gage port for testing

The Delavan .60 80A Oil Nozzle has a stainless-steel, hollow orifice and features a brass body. Type A-nozzles are mainly used on burners with a hollow cone air pattern and for through puts up to 2.00 GPH. The droplet distribution is concentrated on the outside of the cone and results in good ignition and low-noise combustion. This boiler replacement part is compatible with an oil-burning appliance.

• Boiler replacement part
• For use with an oil-burning appliance
• Brass body
• Stainless-steel, hollow orifice

All the features you trust from the original Isolator Uni-Flange ball valve, plus a 360 degree rotating flange that allows for orientation to any degree necessary for your installation. This forged brass full port ball valve features a blow-out proof stem, adjustable packing glands and a stainless steel snap ring for extra stability during installation. The only way to isolate circulator pumps.

• Conical inlet to minimize turbulence
• Replaces 3-components, eliminates 2-leak paths, saves approximately 20 minutes in labor
• Fits virtually any standard circulator pump
• Available with slotted holes for high velocity pumps
• Prevents electrolysis
• Eliminates galvanic corrosion

• 4 in 1 alternative replaces a ball valve and 2 tee fittings and 1 boiler drain
• Quickly connect entire system to cold water feed
• Easily install, isolate, drain and replace any expansion tank
• Pressure rated at 600 WOG
• 1/2" FIP x MIP x FIP x HOSE

This 1 in. lead free brass water pressure reducing valve is the standard model, designed to reduce incoming water pressure to protect plumbing systems and reduce water consumption for commercial, industrial and residential applications. The easy maintenance assembly consists of a replaceable seat module, NPT threaded female union inlet by NPT female outlet and a bypass feature to control thermal expansion pressure. The temperature range is 33 to 160 degree F (0.5 to 71 degree C). Suitable for up to 300 psi (20.7 BAR), the pressure range can be adjusted from 25 to 75 psi (172 to 517 kPa) with the standard setting at 50 psi (345 kPa).

• NPT threaded female union inlet by NPT female outlet
• Sealed spring cage with stainless steel cage screws
• Integral stainless steel strainer removable for cleaning
• Replaceable seat module
• Suitable for up to 300 psi
• Pressure range can be adjusted from 25 to 75 psi
• Temperature range is 33 to 160 degree F
• Designed to reduce incoming water pressure to protect plumbing systems
• Designed to reduce water consumption for commercial, industrial and residential applications
• Standard setting at 50 psi

Watts 3/4 IN 374A Iron Boiler Pressure Relief Valve, 30 psi, Forged Brass Inlet Features A Flood Sensor With Sentryplus Alert Technology To Detect Excessive Water Discharges From The Relief Valve Requires purchase of activation kit to activate sensor Iron body with forged bronze inlet 550,000 BTU/hr rating Non-metallic disc-to-metal seating Set pressure 30 psi Mfg #F358553

• Features A Flood Sensor With Sentryplus Alert Technology To Detect Excessive Water Discharges From The Relief Valve
• Requires purchase of activation kit to activate sensor
• Iron body with forged bronze inlet
• 550,000 BTU/hr rating

The 3-Speed Service Pump is specially designed to make short work of service calls since it replaces the most commonly used circulators. It features a removable, uni-body Integral Flow Check that maximizes flow, as well as prevents gravity flow, even in the tallest buildings. Wiring is a snap thanks to an extra roomy capacitor box and convenient dual electrical knock out connections.

• 3-speed switch
• Highest performance and starting torque in class
• Replaceable cartridge design
• Self-lubrication

All HAYDON baseboard heating systems are manufactured to provide many years of trouble-free, safe, silent and economical heat distribution. Hot water baseboard systems generate naturally converted heat that rises gently, warming walls and blocking drafts, providing uniform heat throughout a home's entire perimeter. HAYDON's system operates smoothly and silently. With hot air, you constantly hear and feel fan on, heat on, draft, fan off, heat off. Slim and unobtrusive, the low profile Model 750s BTU output is ideal for efficient, economical residential installations.

• Enclosure top-back panel: fabricated from 1-piece of sturdy pre-painted cold rolled steel designed for efficient air flow, with uniform surfaces and no dust-collecting cutouts
• Fingertip positional damper: special hinging mechanism allows for finger-tip control, closes shut to keep out dust or opens wide for maximum heat output, damper deflects air into room, for better heating distribution
• High strength brackets: die-formed from 1 piece of heavy gauge steel designed to strengthen the enclosure and protect the heating element against damage special notches hold the heating element to allow for quiet expansion won't break or bend, cannot pop out of place, a turn of the wrist removes the twist slide brackets, for easy location during installation
• Noiseless element: aluminum fins are mechanically fastened to copper tubing to insure maximum heat transfer, elements have an expanded end for easy sweat connections without coupling
• Silent glide expansion tracks: 2-unique polyethylene silent glide tracks eliminate expansion and contraction noises

This 3/4 by 3/4 in. lead free dual check valve prevents the reverse flow of polluted water from entering into the drinking water supply at the service entrance or at individual outlets. The valve consists of a lead free brass body construction, with two plastic replaceable check valves, and stainless steel springs. It is designed for non-health hazard residential water system containment, continuous pressure applications and is to be installed immediately downstream of the residential water meter, in a vertical or horizontal position. The minimum working pressure is 10 psi (69 kPa) and maximum working pressure is 175 psi (12 BAR).

• Lead free brass body for durability
• Can be installed vertically or horizontally
• Compact design
• Meets ANSI/ASSE Standard 1024
• 3/4 in. union female NPT inlet x female NPT outlet
• Designed for non-health hazard residential water system containment

All HAYDON baseboard heating systems are manufactured to provide many years of trouble-free, safe, silent, and economical heat distribution. Hot water baseboard systems generate naturally converted heat that rises gently, warming walls and blocking drafts, providing uniform heat throughout a home's entire perimeter. HAYDON's system operates smoothly and silently. With hot air, you constantly hear and feel fan on, heat on, draft, fan off, heat off. Slim and unobtrusive, the low profile Model 750s BTU output is ideal for efficient, economical residential installations.

• Enclosure top-back panel: fabricated from 1-piece of sturdy pre-painted cold rolled steel designed for efficient air flow, with uniform surfaces and no dust-collecting cutouts
• Fingertip positional damper: special hinging mechanism allows for finger-tip control, closes shut to keep out dust or opens wide for maximum heat output, damper deflects air into room, for better heating distribution
• High strength brackets: die-formed from 1 piece of heavy gauge steel designed to strengthen the enclosure and protect the heating element against damage special notches hold the heating element to allow for quiet expansion won't break or bend, cannot pop out of place, a turn of the wrist removes the twist slide brackets, for easy location during installation
• Noiseless element: aluminum fins are mechanically fastened to copper tubing to insure maximum heat transfer, elements have an expanded end for easy sweat connections without coupling
• Silent glide expansion tracks: 2-unique polyethylene silent glide tracks eliminate expansion and contraction noises

This 3/4 in. lead free brass water pressure reducing valve is designed to reduce incoming water pressure to protect plumbing systems and reduce water consumption for commercial, industrial and residential applications. The easy maintenance assembly consists of a replaceable seat module, a solder union inlet by NPT female outlet and a bypass feature to control thermal expansion pressure. The temperature range is 33 to 160 degree F (0.5 to 71 degree C). Suitable for up to 300 psi (20.7 BAR), the pressure range can be adjusted from 25 to 75 psi (172 to 517 kPa) with the standard setting at 50 psi (345 kPa).

• Solder union inlet by NPT female outlet
• Sealed spring cage with stainless steel cage screws
• Integral stainless steel strainer removable for cleaning
• Replaceable seat module
• Suitable for up to 300 psi
• Pressure range can be adjusted from 25 to 75 psi
• Temperature range is 33 to 160 degree F
• Designed to reduce incoming water pressure to protect plumbing systems
• Designed to reduce water consumption for commercial, industrial and residential applications
• Standard setting at 50 psi

Nibco ACR Copper Coupling

• 0.75" Tubing
• Dezincification Resistant
• NFPA 99 Healthcare Facilities Gas And Vacuum Systems And The Compressed Gas Association, Pamphlet G4.1 (Medical Gas)
• With Stop
• Mfg #039923307125
• 0.75" Tubing
• Dezincification Resistant
• NFPA 99 Healthcare Facilities Gas And Vacuum Systems And The Compressed Gas Association, Pamphlet G4.1 (Medical Gas)
• With Stop

This is a pressure reducing valve. It is a genuine Bell & Gossett valve. It includes a fast-fill feature.

• Bronze body
• Built-in check valve
• Replaceable strainer
• 1/2" NPT connections
• Factory setting 12 PSIG
• Adjustable range 10-25 PSIG

AM-1 series adjusts, maintains and limits the hot water temperature settings to provide comfort and protect equipment at home. Designed to prevent scalding water and legionella bacteria growth by storing water at 140 degree F and higher. Delivers safe and comfortable water temperatures out of the faucet at 120 degree F.

• Offers constant water temperature under changing operating conditions
• Temperature is limited at any point and if cold water supply is interrupted, flow reduction occurs in seconds
• Designed for easy maintenance and Teflon coating prevents mineral build-up and extends life
• Provides reliable performance at minimum flow of 05 GPM and proportional valve for simultaneous control of hot and cold
• Features dual purpose mixing or diverting values
• Lead free products have products numbers end in LF
• Available temperature gauge adapter in lead-free brass material with EPDM O-ring
• Maximum safe operating pressure (psi)150 psi
• Minimum flow rate (gpm) 0.5 GPM
• Includes check valves on hot and cold ports

The 3/4" 600XL Pressure Reducing Valve handles sandy, debris-laden water systems for high-flow capacity in residential, commercial, and new construction applications. It meets compliance with universal plumbing code. The stainless steel strainer includes a standard 20 mesh configuration and separate-access cover for simplified cleaning, while the bronze threaded bell provides superior corrosion-resistance and speeds access to the internals - together, cutting labor time up to 50%. Internal components of the 600XL utilize a balanced design, providing accurate downstream pressure without consideration of the incoming pressure.

• Meets the requirements of NSF/ANSI 61
• Fiber union gasket ensures fast installation
• Durable construction ensures low maintenance and lifecycle costs
• Inlet pressure changes with balanced design features to protect the system
• Stainless steel strainer screen features single-cap removal
• Threaded bell provides easier access than bolted on bells
• Low-lead law compliant
• ASSE listed 1003 and IAPMO listed

The Isolator is a uni-flange ball valve that isolates a circulator pump, allowing virtually no air into the system during pump replacement or service. Its innovative design combines multiple components into a single forged brass body that saves time, labor and space. The Isolator has revolutionized the installation of circulator pumps and has evolved into the largest flanged ball valve program in the industry today, featuring patented technology with further patents pending. Designed for use with water, oil, glycol mix in residential or commercial residential plumbing, commercial plumbing, heating systems. Refer to specification sheets for additional technical information. All Webstone products are backed by a limited lifetime warranty.

• Easily Isolates the Pump for Replacement
• Replaces 8 components, eliminates 7 leak paths, saves approximately one hour in labor
• Fits virtually any standard circulator pump
• Available with slotted holes for high velocity pumps
• Prevents Electrolysis and Eliminates Galvanic Corrosion
• Rotating Flange is Secured by a Snug-Fit Snap-Ring that Provides Greater Control Over Positioning During Installation

This 1/2 in. bronze combination fill valve and backflow preventer is for use in commercial and residential hydronic heating systems to provide make-up water to the boiler, and prevent backflow when supply pressure falls below system pressure. It consists of a bronze backflow preventer, model 9D and a bronze feed water pressure regulator, model 1156F, in one pre-assembled unit. The high capacity fill valve provides quick system filling and purging. It is designed for use in the boiler feed lines of hydronic heating systems and has 1/2 in. union solder inlet x NPT threaded outlet connections. The maximum pressure is 100 psi (6.9 bar).

• Pre-assembled unit
• Solder connection
• All bronze, union solder x female NPT
• High capacity fill
• 100 PSI Maximum pressure
• Used in commercial and residential hydronic heating systems

The Air Separator is a brass horizontal-mount accessory that traps and forces microbubbles out of the system. It reduces noise and improves system efficiency and operation. It features a removable vent head and stainless steel coalescing medium.

• 1 in. Inside Diameter and 1.125 in. Outside Diameter
• Reduces noise, improves system efficiency and operation
• Reduces wear and tear on system components
• Allows flow to be directed into either side of the unit
• Pin guided float for smooth operation
• Corrosion-resistant stainless steel coalescing medium can be removed and cleaned if a blockage should occur
• Ideal for use with the Webstone expansion tank ProService valve
• "1 I.D. and 1.125 O.D."

Never wait for hot water again; The Watts Hot Water Recirculating Pump provides hot water at every faucet or shower when needed, eliminating wasted water. It is easy to install on any water system and requires no additional piping. The unique design of the pump ensures quiet, maintenance-free operation. The system includes a built-in 24 hour, a dual setting programmable timer to activate the pump only when needed.

• Save money - up to 10% of your water bill
• Maintenance free
• Easy to install in less than 1 hour
• Additional sensor valves available for homes with multiple plumbing loops
• Hot water WHERE you need it
• Hot water when you need it
• Programmable timer is built-in so the pump turns on only when you need it
• Not for use with tankless water heaters
• Check compatibility to ensure it will work on your system
• Reliable and easy to maintain

This 1/2 inch high capacity feed water pressure regulator is for use in commercial and residential hydronic heating systems to fill the boiler and piping system with water, and to maintain water pressure in the system at all times. It also provides make-up water to the system in the event of system leaks. It consists of a bronze body with union threaded inlet and NPT threaded outlet connections, a tight seating check valve, stainless steel strainer, and purge lever for manual purging. It has high capacity performance and a simplified servicing design. It is suitable for use in the boiler feed lines of hydronic heating systems. The maximum pressure is 100 psi (6.9 bar).

• Tight seating check valve
• Purge lever
• High capacity
• Stainless steel strainer
• Female threaded inlet connection
• Female threaded outlet connection

The Taco LWCO provides reliable protection for all types of boilers, from small residential hot water boilers to large industrial steam boilers. The boiler's minimum safe operating water level is specified by each manufacturer. Should the water level dip below that specified level, heat will accumulate quickly causing significant damage to the boiler and a potential external safety hazard. The Taco LWCO prevents this hazard from occurring. The LWCO can be used as a primary or secondary low water cutoff on steam boilers up to 250 psi, a primary limit control on hot water boilers or to protect pumps from running dry in condensate receiver tank applications. The LWCO can also activate alarm systems or automatic water feeders.

• Patented adjustable probe sensitivity
• External LEDs and simplified wiring for easy installation and testing
• Automatic or manual reset mode
• Standard on-board (NEMA 1) or remote (NEMA 4) probe
• LT models include external test button, adjustable Delay on Break (DOB) and Delay or Make (DOM) features

Our most popular backflow preventer model, the 1 in. 975XL2 Reduced Pressure Principle Backflow Preventer is utilized on potable water applications for high health hazard protection from backsiphonage and backpressure of contaminated water. The wye pattern, bronze body design provides separate access to each check valve and the relief valve to reduce valuable labor costs and repair time, while the short lay length eases replacement costs. The 975XL2 includes all the necessary components for managing your system, and is the simplest, most reliable backflow preventer in the irrigation market today.

• Easy access to first check simplifies debris removal
• Repair kit allows for a quick fix instead of a full replacement
• Entire unit serviceable in line
• Stainless steel shutoff handles are corrosion resistant
• Wye pattern design provides separate access to checks and relief valve for reduced labor costs
• ASSE listed, IAPMO listed, CSA certified, AWWA compliant, meets the requirements of NSF/ANSI 61
• Approved by the Foundation for Cross Connection Control and Hydraulic Research at USC
• Safe Drinking Water Act compliant

All HAYDON baseboard heating systems are manufactured to provide many years of trouble-free, safe, silent and economical heat distribution. Hot water baseboard systems generate naturally converted heat that rises gently, warming walls and blocking drafts, providing uniform heat throughout a home's entire perimeter. HAYDON's system operates smoothly and silently. With hot air, you constantly hear and feel fan on, heat on, draft, fan off, heat off. Slim and unobtrusive, the low profile Model 750s BTU output is ideal for efficient, economical residential installations.

• Enclosure top-back panel: fabricated from 1-piece of sturdy pre-painted cold rolled steel designed for efficient air flow, with uniform surfaces and no dust-collecting cutouts
• Fingertip positional damper: special hinging mechanism allows for finger-tip control, closes shut to keep out dust or opens wide for maximum heat output, damper deflects air into room, for better heating distribution
• High strength brackets: die-formed from 1 piece of heavy gauge steel designed to strengthen the enclosure and protect the heating element against damage special notches hold the heating element to allow for quiet expansion won't break or bend, cannot pop out of place, a turn of the wrist removes the twist slide brackets, for easy location during installation
• Noiseless element: aluminum fins are mechanically fastened to copper tubing to insure maximum heat transfer, elements have an expanded end for easy sweat connections without coupling
• Silent glide expansion tracks: 2-unique polyethylene silent glide tracks eliminate expansion and contraction noises

The Taco 007 is a cartridge style, maintenance free, wet-rotor, in-line, single stage circulator. It is designed for quiet operation in Hydronic Heating, Radiant Heating, Hydro-Air Fan Coils, Indirect Water Heating, Chilled Water cooling, and Domestic Water Systems. Available in Cast Iron or Bronze construction with universal flange to flange dimensions. The unique replaceable cartridge contains all of the moving parts and allows for easy service, instead of replacing the entire circulator. Ideal for a wide range of applications.

• Hydronic circulation pump
• Self lubricating
• Quiet, efficient operation
• Can utilize 3/4 in., 1 in., 1-1/4 in., 1-1/2 in. flanges

The Delavan .85 80B Oil Nozzle has a stainless-steel, hollow orifice and features a brass body. Type B-nozzles produce a spray that distributes droplets fairly uniformly throughout the complete pattern. The spray pattern becomes progressively hollower at higher flow rates, particularly above 8.00 GPH. Provides smooth ignition and efficient combustion, particularly in larger burners. This boiler replacement part is compatible with an oil-burning appliance.

• Boiler replacement part
• For use with an oil-burning appliance
• Brass body
• Stainless-steel, hollow orifice

This non-potable water expansion tank is designed for use in commercial and residential closed loop hydronic heating system piping to control the thermal expansion of hot water and maintain system pressure below the relief setting of the relief valve. This carbon steel tank is pre-charged at 12 PSI, tank volume is 2.1 gallons and features a durable expansion membrane that prevents contact of the water with the air in the tank. This rugged butyl diaphragm minimizes loss of the air change and ensures long and trouble-free life for the system. This tank is made of carbon steel with epoxy finish, mounts to supply piping, 1/2 inch MNPT system connection and a 0.302-32 inch charging valve connection (standard tire valve) to facilitate on-site charging of the tank to meet system requirements. The maximum working pressure is 75 PSI (5.3 BAR).

• Precharged to 12 psi
• Rugged flexible butyl diaphragm
• Inline and free standing models
• Steel construction

This 3/4 inch lead free temperature and pressure relief valve is designed to provide automatic temperature and pressure protection to hot water supply tanks and hot water heaters up to 105,000 BTU/hr. This two-in-one relief valve provides a proven and cost effective means to protect against excessive temperature and pressure emergency conditions. It features a lead free copper alloy body with extended shank to accommodated up to 1 3/4 IN of insulation, NPT male inlet and NPT female outlet connections, a unique thermostat with special thermo-bonded coating, and test lever. The temperature relief is 210 degrees F (99 degrees C) and the pressure relief is set at 150 psi (10.3 bar).

• Lead free copper alloy body construction
• Extended shank for thick tank insulation up to 1 3/4 inches
• 3/4 IN male NPT inlet with pre-applied thread sealant
• ASME rated and CSA listed
• Pressure relief range is 75 to 150 psi
• ASME rated, CSA Listed
• Extension thermostat with thermo-bonded coating
• Used to provide automatic temperature and pressure protection to hot water supply tanks and hot water heaters up to 105,000 BTU/hr
• ANSI Z21.22 certified
• Includes test lever and stainless steel spring

The DELAVAN 0.65 80A Oil Nozzle has a stainless-steel, hollow orifice and features a brass body. Type A-nozzles are mainly used on burners with a hollow cone air pattern and for through puts up to 2.00 GPH. The droplet distribution is concentrated on the outside of the cone and results in good ignition and low-noise combustion. This boiler replacement part is compatible with an oil-burning appliance.

• Precise spray angles and optional spray uniformity through new machining process
• Reduced distributor size with shorter tangential slots to avoid plugging
• Aerodynamic body configuration
• Rolled threads to avoid metal chips and burrs
• Sintered filter for maximum protection
• Boiler replacement part is compatible with an oil-burning appliance
• ISO 9001 certified

The Taco 1-1/4 in. cast iron Freedom Flanges set includes: (2) flanges, (4) nuts, and (4) mounting bolts. These flanges are designed for use with Taco "00", "00e", "2400", and "100" series hydronic circulators. Easily installed and removed with a common wrench.

• For use in a hydronic heating system
• Compatible with a wide variety of Taco circulators
• 1-1/4 in. Dia connection size
• Unique hex design provides easy-on, easy-off installation with a standard adjustable wrench

The Taco 3/4 in.cast iron Freedom Flange set includes: (2) flanges, (4) nuts, and (4) mounting bolts. These flanges are designed for use with Taco "00", "00e", "2400", and "100" series hydronic circulators. Easily installed and removed with a common wrench.

• For use in a hydronic heating system
• Compatible with a wide variety of Taco circulators
• 3/4 in. Dia connection size
• Unique hex design provides easy-on, easy-off installation with a standard adjustable wrench

The 1/2 in. 760 Dual Check Valve Assembly with Intermediate Atmospheric Vent provides low health hazard protection from backflow in both residential and commercial applications, primarily from a residential boiler or small commercial boiler. Features of this continuous pressure type backflow preventer include a threaded atmospheric vent drain for safe drainage, and corrosion-resistant, high quality brass body construction with an integral stainless steel strainer screen to prevent buildup of unwanted debris. Threaded FNPT union connections are standard and included on both ends.

• Fits 1/2-in. inside diameter pipe
• Includes two FNPT union tailpieces
• Brass body and stainless-steel strainer screen protect against corrosion
• Integral strainer screen ensures long-lasting prevention of debris buildup
• Threaded atmospheric vent drain allows for safe drainage
• 1-year limited warranty
• Easy to install
• Retrofit
• Commonly used on residential water heaters
• Industry leading

Taco Switching Relays combine clearly labeled PC board layouts with advanced features that allow for total system customization. External indicator lights provide instant diagnostic feedback, making a snap of service calls or new installation start-ups. All switching relays are UL Listed, are compatible with conventional and programmable thermostats.

• Compact design
• UL and CSA approved
• 3-year warranty
• Fuse protected
• Simplified wiring for ease of installation
• Premium sealed relays